Is this a one-off operator who might make it their business to screw people over, or is this a developer with plenty of projects running & a prominent realtor in place, both of whom rely on their reputation constantly.

I don't know of a web site that does this.

No matter how many dollars Z is throwing at marketing, no one can buy off your reputation of THE go to person that buys and flips houses.Don't be scared of Zillow.

Ask for references, look at other projects, and make sure that they have a reputation for both finding great deals, analyzing well and operating well.

I DO NOT want a reputation for roaches. 

@Andy Reichert, I started by talking to a real estate agent who worked for a reputable company locally.

Attorney is a shark, one of the best reputations in my area. 

Potential partners, clients, sellers, service providers will want to know they're working with a reputable person / company.  

HOA Board seeks reliable reputable monthly cleaning/maintenance company to clean common entry areas for 24-unit building.Recommendations appreciated!

@Marilyn Cuevasits a web product. here.